Keyphrases
- data model
- xml documents
- xml data
- data integration
- relational model
- data modeling
- databases
- object oriented
- data types
- semistructured data
- query language
- semi structured
- database design
- database systems
- xml queries
- database
- type checking
- data sources
- xml schema
- conceptual model
- topic maps
- database management systems
- website
- relational algebra
- query evaluation
- data exchange
- markup language
- relational data model
- xml format